I could gainsay you could gainsay he could gainsay we could gainsay you could gainsay they could gainsay
V-ing form
I could be gainsaying you could be gainsaying he could be gainsaying we could be gainsaying you could be gainsaying they could be gainsaying
Perfect
I could have gainsaid you could have gainsaid he could have gainsaid we could have gainsaid you could have gainsaid they could have gainsaid
V-ing perfect
I could have been gainsaying you could have been gainsaying he could have been gainsaying we could have been gainsaying you could have been gainsaying they could have been gainsaying
Negation
Simple form
I couldn't gainsay you couldn't gainsay he couldn't gainsay we couldn't gainsay you couldn't gainsay they couldn't gainsay
V-ing form
I couldn't be gainsaying you couldn't be gainsaying he couldn't be gainsaying we couldn't be gainsaying you couldn't be gainsaying they couldn't be gainsaying
Perfect
I couldn't have gainsaid you couldn't have gainsaid he couldn't have gainsaid we couldn't have gainsaid you couldn't have gainsaid they couldn't have gainsaid
V-ing perfect
I couldn't have been gainsaying you couldn't have been gainsaying he couldn't have been gainsaying we couldn't have been gainsaying you couldn't have been gainsaying they couldn't have been gainsaying
Interrogative form
Simple form
could I gainsay? could you gainsay? could he gainsay? could we gainsay? could you gainsay? could they gainsay?
V-ing form
could I be gainsaying? could you be gainsaying? could he be gainsaying? could we be gainsaying? could you be gainsaying? could they be gainsaying?
Perfect
could I have gainsaid? could you have gainsaid? could he have gainsaid? could we have gainsaid? could you have gainsaid? could they have gainsaid?
V-ing perfect
could I have been gainsaying? could you have been gainsaying? could he have been gainsaying? could we have been gainsaying? could you have been gainsaying? could they have been gainsaying?
Interro-negative form
Simple form
couldn't I gainsay? couldn't you gainsay? couldn't he gainsay? couldn't we gainsay? couldn't you gainsay? couldn't they gainsay?
V-ing form
couldn't I be gainsaying? couldn't you be gainsaying? couldn't he be gainsaying? couldn't we be gainsaying? couldn't you be gainsaying? couldn't they be gainsaying?
Perfect
couldn't I have gainsaid? couldn't you have gainsaid? couldn't he have gainsaid? couldn't we have gainsaid? couldn't you have gainsaid? couldn't they have gainsaid?
V-ing perfect
couldn't I have been gainsaying? couldn't you have been gainsaying? couldn't he have been gainsaying? couldn't we have been gainsaying? couldn't you have been gainsaying? couldn't they have been gainsaying?